My radio, my keys, locks and trunk unlock are not working.

This will be a dealership repair.

does the lock unlock function work? if not you need to reprogram the key fob most likely. does the "B" on the boot(trunk) lid open the trunk? if not but the lock unlock function works on the key fob you most likely need a trunk(boot) motor or latch

at trunk button override and jump switch if dont work have to make way to get through at back seat

There are Valet keys (often with a green knob) that will
only unlock the front doors and the ignition but not the
glove box nor boot/trunk.

When either the front door locks or the console button is
pressed, all the doors should lock. Likewise, when either
front door is unlocked, all the doors fuel filler lid and if
selected, the boot will also unlock.

Boot lock has three positions. Unlocked to the left,
automatic with the doors in the center, always locked to the
right. Simply remove the key in what ever position you desire.

The locks can get confused and not work correctly. Simply
sit in the car and manually lock all the doors. That will
usually get the locking module sane again.

my radio is not working today changed my battery and i don't know my code

Programming
When
Key added or replaced. System malfunction.
How
Obtain all keys. A maximum of 3 keys can be programmed. Close all doors and boot/tailgate. Switch ignition ON. Repeat procedure below 3 times: Within 4 seconds: Press key lock or unlock button. Within 4 seconds: Switch ignition OFF. Within 4 seconds: Switch ignition ON. Within 4 seconds: Press key lock or unlock button. System should now lock or unlock vehicle. Within 4 seconds: Press key lock or unlock button. Within 10 seconds: Press lock or unlock button of first key. System should now lock or unlock vehicle. Press lock or unlock button of second key. System should now lock or unlock vehicle. Press lock or unlock button of third key. System should now lock or unlock vehicle. Switch ignition OFF. Remove key. Check operation of all programmed keys.
NOTE: If less than 3 keys are to be programmed, remove ignition key after programming last key.

Is the key you are using green? If so, it is the Valet Key and it will only lock the door - it will not work on the glove box or the trunk.

if you have a newer 07 and on, there is a lock cylinder near the trunk grab handle. you will have to kneel down to be able to see it. the mechanical key thats inside the remote will have to be used. a spare/valet key wont work. support your local bmw dealership

try getting some dry lubricant and applying it in the lock this usually works well. cold weather usually makes the problem worse.

I locked the 2000 lincoln continental with the key fob but lost it now the ignition key wilolo not unlock the door